Scilab Data type
Last update : 6/12/2005

fec_properties - description of the fec entities properties

### Description

The Fec entity is a leaf of the graphics entities hierarchy. It represents 2D finite elements plots (see `fec`, `Sgrayplot`).

  parent: This property contains the handle of the parent. The parent of the fec entity should be of the type `"Axes"` or `"Compound"`.
  children: This property contains a vector with the `children` of the handle. However, `Fec` handles currently do not have any `children`.
  visible: This field contains the `visible` property value for the entity . It should be `"on"` or `"off"` . By default, the plot is visible, the value's property is `"on"`. If `"off"` the plot is not drawn on the screen.
  data: This is a three column matrix `[x,y,f]`, where `x(i)` and `y(i)` are the coordinates of the `i`'th node. `f(i)` is the value associated to the node `i`.
  triangles: This is a five column matrix `[tn,n1,n2,n3,flag]`. `tn(j)` is the triangle number. `n1(j)`, `n2(j)` and `n3(j)` are the index of the nodes which constitute the triangle. (`flag(j)` is not used).
  z_bounds: This `[zmin,zmax]` vector gives the z values associated with the first and the last color (of the current colormap). More exactly if the colormap have `nc` colors and if we note `dz = (zmax-zmin)/nc`, then the part of the triangulation where `zmin + (i-1)dz <= z < zmin + i dz` is filled with the color `i`). By default `zmin = min(func)` and `zmax = max(func)`. If you want to do an animation with func values that varie in time, take for `zmin` and `zmax` the global minimum and maximum or something close.
  user_data: This field can be use to store any scilab variable in the fec data structure, and to retreive it.

### Examples

       set("figure_style","new"); //create a figure

       x=-10:10; y=-10:10;m =rand(21,21);
       Sgrayplot(x,y,m);
       a=get("current_axes");
       f=a.children.children(1)
       f.data(:,3)=(1:size(f.data,1))';
       a.parent.color_map=hotcolormap(64);

### See Also

`set`, `get`, `delete`, `fec`, `Sgrayplot`, `graphics_entities`,

### Author

Djalel ABDEMOUCHE